6.88. For an existing situation, assessments should usually be conducted in two distinct steps. In the first assessment step, it should be determined whether corrective action needs to be considered at all or whether the current condition of the facility is considered acceptable. In the second assessment step, performed only if necessary on the basis of the results of the first step, options to improve the situation should be identified and evaluated. Which criteria (current criteria, criteria that were valid at the time of licensing of the facility or intervention criteria) to apply in this process will depend on national regulations.